diff --git a/lib/tiny-cloud/init b/lib/tiny-cloud/init
index bdc0a89..91b0b7e 100644
--- a/lib/tiny-cloud/init
+++ b/lib/tiny-cloud/init
@@ -73,7 +73,9 @@ init__expand_root() {
 		$MOCK partx -u "$volume"
 	fi
 	# resize filesystem
-	$MOCK resize2fs "$dev"
+	if [ -e "$dev" ] || [ -n "$MOCK" ]; then
+		$MOCK resize2fs "$dev"
+	fi
 }
 
 init__install_hotplugs() {